CN103191799A - Improved jaw crusher - Google Patents

Abstract

The invention relates to an improved jaw crusher, which comprises a frame body, a fixed jaw plate, a transmission mechanism, a movable jaw assembly and a gap adjusting mechanism, wherein the fixed jaw plate is arranged on the frame body; the transmission mechanism is provided with an eccentric shaft, the movable jaw component is pivoted on the eccentric shaft in a sleeving manner at the top end, the pressing block is positioned at the top end of the movable jaw protection plate, the fastening bolt is positioned above the eccentric shaft, and an angle smaller than 180 degrees is formed between the movable jaw protection plate of the movable jaw component and the movable jaw plate, so that the movement track at the bottom end of the movable jaw plate can be improved, the production capacity of the movable jaw plate is improved, the fine powder ratio is reduced, the service life of the movable jaw plate is prolonged, and the whole weight of the jaw crusher can be reduced.

Description

Improved Jaw Crusher

technical field

The invention relates to a crusher, especially a compound pendulum jaw crusher, which is a machine capable of crushing mined natural stones according to a certain size, and is widely used in metallurgy, mining, and building materials. , chemical, coal and other industries.

Background technique

Existing machinery for crushing stone materials, one of which is a compound pendulum jaw crusher, its basic structure is mainly composed of two jaw plates (movable jaw plate and fixed jaw plate). The movable jaw plate reciprocates periodically relative to the fixed jaw plate, sometimes approaching and sometimes moving away, so that the stones located between the movable jaw plate and the fixed jaw plate are crushed by extrusion, splitting and bending. Because of its simple structure, easy manufacture, reliable operation, convenient use and maintenance, etc., it is widely used in engineering circles.

Please refer to Figure 6, which is a compound pendulum jaw crusher in the prior art, which includes a frame body 60, a fixed jaw plate 64, a transmission mechanism, a movable jaw assembly 80 and a gap adjustment institution 90;

The front end of the frame body 60 is provided with a fixed jaw seat 61, and its rear end is provided with an adjustment mechanism fixing seat 62, and the frame body 60 has two opposite side plates 63 in addition;

The fixed jaw plate 64 is fixed on the fixed jaw plate seat 61 of the frame body 60;

The transmission mechanism includes two bearing seats and an eccentric shaft 70, the two bearing seats are respectively arranged on the two side plates 63, the two ends of the eccentric shaft 70 are rotatably arranged in the two bearing seats, and the eccentric shaft 70 is connected with a A power source, which drives the eccentric shaft 70 to rotate;

The movable jaw assembly 80 has a movable jaw body 81, a movable jaw guard plate 82, a movable jaw plate 83, a pressing block 84, a fastening bolt 840, and an elastic element 841;

The movable jaw body 81 is sleeved and pivoted on the eccentric shaft 70 at its top;

The movable jaw guard plate 82 is arranged on one side of the outer wall surface at the top end of the movable jaw body 81 and faces the direction of the fixed jaw plate 64 .

The movable jaw plate 83 is fixed on the movable jaw body 81 and faces the direction of the fixed jaw plate 64. One side outer wall surface of the movable jaw plate 83 and one side outer wall surface of the movable jaw guard plate 82 form a plane, so as to A crushing cavity 85 is formed between the movable jaw plate 83 and the fixed jaw plate 64;

The pressing block 84 is arranged on the movable jaw body 81 and is located between the movable jaw plate 83 and the movable jaw guard plate 82;

The fastening bolt 840 passes through the movable jaw body 81 and is combined and fixed with the pressing block 84, and is located below the eccentric shaft 70;

The elastic element 841 is sleeved on the fastening bolt 840 and is located on the side of the movable jaw body 81 facing away from the fixed jaw plate 60, so that the fastening bolt 840 presses the pressing block 84 against the movable jaw body 81;

Thus, the movable jaw body 81 is rotated by the eccentric shaft 70 to make the movable jaw assembly 80 swing as a whole;

The gap adjusting mechanism 90 has a hydraulic cylinder 91, a gap adjusting seat 92 and a pusher 93;

The hydraulic cylinder 91 is arranged on the adjusting mechanism fixing seat 62 of the frame body 60, and has a telescopic rod 910 facing the direction of the movable jaw assembly 80;

One end of the gap adjusting seat 92 is connected to one end of the telescopic rod 910;

One end of the ejecting member 93 is pivotally arranged on the other end of the gap adjustment seat 92, and the other end of the ejecting member 93 is pivotally arranged on the outer wall surface of the bottom end side of the movable jaw body 81; thereby driven by the hydraulic cylinder 91 The ejecting member 93 moves, and drives the bottom end of the movable jaw body 81 to displace, so as to adjust the distance between the movable jaw plate 83 and the bottom end of the fixed jaw plate 64 .

Because the movable jaw body 81 of the compound pendulum jaw crusher is directly suspended on the eccentric shaft 70 and is directly driven by the eccentric shaft 70 . The bottom of the movable jaw body 81 is supported on the side wall of the frame body 50 by a thrust plate, so the movable jaw plate 83 can reciprocate the fixed jaw plate 64 on the one hand, and can simultaneously swing up and down on the other hand. The trajectory of each point on the 83 is not the same, please refer to shown in Figure 7, the trajectory of each point on the movable jaw plate 83 is close to the circular motion trajectory 86 at the top of the movable jaw plate 83, and close to the circular motion trajectory at the middle section of the movable jaw plate 83. The elliptical motion trajectory 87 and the motion trajectory 88 continuously changing to the bottom of the movable jaw plate 83, the closer to the bottom of the movable jaw plate 83, the narrower the stroke difference between the left and right sides of the motion trajectory, so that the moving stroke of the movable jaw plate 83 is from bottom to bottom. Therefore, it can not only crush and split stones, but also crush them. Since the turning direction of the eccentric shaft 70 is counterclockwise, the moving direction of each point on the movable jaw plate 83 is conducive to promoting material discharge, so the crushing effect is good, the crushing rate is high, the product particle size is uniform and mostly in the form of cubes, suitable for crushing medium-hard stones .

The biggest shortcoming of the existing compound pendulum jaw crusher is that, due to the complex motion trajectory at the bottom of the movable jaw plate 83, when crushing stones, the stone is not only squeezed by the bottom end of the movable jaw plate 83, but also Also subject to partial grinding and stripping, the movable jaw plate 83 is relatively easy to wear and has a short service life, and because the movable jaw plate 83 is not easy to replace, so how to increase the service life of the movable jaw plate is actually required by the industry.

Contents of the invention

In view of the disadvantage that the movable jaw plate of the prior art is easy to be damaged, the purpose of the present invention is to improve the above-mentioned shortcomings by improving the movement trajectory of the movable jaw assembly, so that the movable jaw plate has a proper service life.

In order to achieve the above-mentioned purpose of the invention, the improved jaw crusher of the present invention includes a frame body, a fixed jaw plate, a transmission mechanism, a movable jaw assembly and a gap adjustment mechanism;

The front end of the frame body is provided with a fixed jaw seat, the rear end of the frame body is provided with an adjustment mechanism fixing seat, and spaced two side plates are arranged between the front end and the rear end of the frame body;

The fixed jaw plate is arranged on the fixed jaw plate seat of the frame body;

The transmission mechanism includes two bearing seats and an eccentric shaft, the two bearing seats are respectively arranged on the two side plates, the two ends of the eccentric shaft are rotatably arranged in the two bearing seats, the eccentric shaft is connected with a power source, The power source is used to drive the rotation of the eccentric shaft;

The movable jaw assembly includes a movable jaw body, a movable jaw guard plate, a movable jaw plate, a pressure block, a fastening bolt and an elastic element, the top of the movable jaw body is sleeved and pivoted on the eccentric shaft, The movable jaw guard is arranged on one side of the outer wall at the top of the movable jaw body and faces the direction of the fixed jaw. The movable jaw is fixed on the movable jaw body and faces the direction of the fixed jaw and is located on the movable jaw The pressing block is set on the outer wall of the movable jaw guard plate facing the fixed jaw plate and is located at the top end of the movable jaw guard plate. One end of the fastening bolt penetrates the movable jaw body and is connected with the pressing The fastening bolt is located above the eccentric shaft, the elastic element is sleeved on the fastening bolt and its two ends respectively abut against the other end of the fastening bolt and the movable jaw body faces away from the fixed jaw plate the other side of

The gap adjusting mechanism has a hydraulic cylinder, a gap adjusting seat and a pusher. The hydraulic cylinder is arranged on the fixing seat of the adjusting mechanism. It has a telescopic rod facing the direction of the movable jaw assembly. One end of the gap adjusting seat is connected to One end of the telescopic rod, one end of the ejector is pivotally arranged at the other end of the gap adjustment seat, and the other end of the ejector is pivotally arranged at the bottom of the movable jaw body.

Said improved jaw crusher, wherein, the movable jaw guard plate and the movable jaw plate form an angle less than 180 degrees.

Said improved jaw crusher, wherein, the axis center of the eccentric shaft is at the same height as the top end of the movable jaw plate.

The improved jaw crusher, wherein a protection mechanism is further provided at the bottom of the movable jaw assembly, the protection mechanism includes a base, a connecting rod and an elastic member, the base has a front, The perforation on the rear two sides, the base is arranged at the rear end of the frame body and below the fixing seat of the adjustment mechanism, one end of the connecting rod is pivotally arranged at the bottom end of the movable jaw body, and the other end of the connecting rod One end can slide through the perforation of the base and protrude outside the body of the frame. The elastic member is sleeved on the other end of the connecting rod protruding outside. The end of the seat and the other end of the connecting rod.

With the application of the above-mentioned technical means, due to changing the joint position of the movable jaw assembly and the eccentric shaft, the movement trajectory of the movable jaw plate is changed, especially the movement trajectory of the bottom end of the movable jaw plate. Therefore, compared with the existing jaw crusher machine, the movable jaw plate of the present invention is not easily damaged, has a long service life, and improves the production capacity of the jaw crusher and reduces the fine powder ratio;

There is an angle between the movable jaw guard plate and the movable jaw plate, and the rebounded materials in the crushing cavity formed between the movable jaw plate and the fixed jaw plate can directly fall into the crushing cavity by hitting the movable jaw guard plate, without It will pop out of the crushing cavity, affecting the overall operation, and can increase the speed of feeding and crushing;

Compared with the jaw crusher in the prior art, the height of the frame body can be designed to be lower by the setting position of the bearing seat of the present invention, which can reduce the weight of the frame body;

The protection mechanism can provide cushioning and overload protection effects for the movable jaw assembly, preventing the movable jaw assembly from being stuck and damaged by materials that are too large or too hard.

Description of drawings

Fig. 1 is a schematic side view of the present invention omitting one side plate;

Fig. 2 is a schematic side view of the frame body of the present invention omitting one side plate;

Figure 3 is a schematic side view of the movable jaw assembly of the present invention;

Fig. 4 is a comparative schematic diagram of the motion locus (solid line) of each part of the movable jaw assembly of the present invention and the motion locus (dotted line) of the prior art;

5 is a schematic diagram of the analysis of the kinematic structure of the movable jaw assembly of the present invention;

Fig. 6 is a schematic side view of the prior art with one side plate omitted;

Fig. 7 is a schematic diagram of the movement tracks of various parts of the movable jaw assembly in the prior art.

Detailed ways

In the following, the technical means adopted by the present invention to achieve the intended purpose of the invention will be further described in conjunction with the accompanying drawings and preferred embodiments of the present invention.

The present invention is an improved jaw crusher, as shown in FIG. 1 , which includes a frame body 10 , a fixed jaw plate 14 , a transmission mechanism 20 , a movable jaw assembly 30 and a gap adjustment mechanism 40 .

Please refer to Fig. 2, the frame body 10 is a hollow frame body, the two ends of the frame body are respectively a front end and a rear end, a fixed jaw seat 11 is formed at the front end, and an adjustment mechanism is formed at the rear end The fixed seat 12 and the frame body 10 have two opposite side plates 13, the schematic diagram of which side plate 13 is omitted in Fig. 1 and Fig. 2, and the two side plates 13 are arranged at intervals between the front end and the rear end of the frame body between.

The fixed jaw plate 14 is fixedly arranged on the fixed jaw plate seat 11 of the frame body 10 by bolts and elastic elements, and one side of the fixed jaw plate 14 faces the rear end direction of the frame body 10 .

The transmission mechanism 20 includes two bearing housings 21 and an eccentric shaft 22, the two bearing housings 21 are respectively arranged on the two side plates 13, the two ends of the eccentric shaft 22 are rotatably arranged in the two bearing housings 21, the eccentric The shaft 22 is connected with a power source (not shown in the figure), and the eccentric shaft 22 is driven to rotate by the power source.

Please refer to FIG. 3 , the movable jaw assembly 30 has a movable jaw body 31 , a movable jaw guard plate 32 , a movable jaw plate 33 , a pressing block 34 , a fastening bolt 340 , and an elastic element 341 ;

The top of the movable jaw body 31 has a mounting hole 310 through the outer walls of both sides, and a connecting seat 311 is provided on the outer wall at the bottom of the movable jaw body 31, and the connecting seat 311 faces the rear of the frame body 10. In the end direction, the movable jaw body 31 is sleeved and pivoted on the eccentric shaft 22 through the installation hole 310;

The movable jaw guard plate 32 is arranged on one side of the outer wall surface at the top end of the movable jaw body 31 and faces the front end of the frame body 10;

The movable jaw plate 33 is fixed on one side of the outer wall surface of the movable jaw body 31 and faces the direction of the fixed jaw plate 14, an angle θX is formed between the movable jaw plate 33 and the movable jaw guard plate 32, and the angle can be designed If the degree is less than 180 degrees, a crushing cavity 35 is formed between the movable jaw plate 33 and the fixed jaw plate 14 and between the two side plates 13. The crushing cavity 35 is a space with a wide top and a narrow bottom;

The pressing block 34 is arranged on the outer wall surface of the movable jaw guard plate 32 facing the fixed jaw plate 14, and the pressing block 34 is located at the top end of the movable jaw guard plate 32;

One end of the fastening bolt 340 passes through the movable jaw body 31 and is combined and fixed with the pressing block 34 , and the fastening bolt 340 is located above the eccentric shaft 22 ;

The elastic element 341 is a spring, which is sheathed on the fastening bolt 340, and the other end of the fastening bolt 340 and the other end of the movable jaw body 31 facing away from the fixed jaw plate 14 are pressed against the other end of the fastening bolt 340 by the two ends of the spring respectively. On one side, the fastening bolt 340 can press the pressing block 34 to be tightly positioned on the movable jaw body 31;

Therefore, when the eccentric shaft 22 is driven by the power source to rotate, it can drive the movable jaw assembly 30 to swing as a whole.

The gap adjusting mechanism 40 has a hydraulic cylinder 41, a gap adjusting seat 42 and a pusher 43;

The hydraulic cylinder 41 is arranged on the fixing seat 12 of the adjustment mechanism of the frame body 10, and has a telescopic rod 410 facing the direction of the movable jaw assembly 30. The telescopic rod 410 can protrude toward the direction of the movable jaw assembly 30 or face the adjustment mechanism. The fixed seat 12 is retracted in the direction;

One end of the gap adjusting seat 42 is connected to one end of the telescopic rod 410;

The push piece 43 is a rod body, one end of which is pivotally arranged on the other end of the gap adjustment seat 42, and the other end of the push piece 43 is pivotally arranged on the connecting seat 311 at the bottom end of the movable jaw body 31;

Thus, the hydraulic cylinder 41 drives the ejector 43 to move with the telescopic rod 410, and drives the bottom end of the movable jaw body 31 to move with the ejector 43, so as to adjust the position between the movable jaw 33 and the fixed jaw 14. Spacing at the bottom.

Please refer to FIG. 1, in a specific embodiment of the present invention, a protection mechanism 50 is further provided at the bottom of the movable jaw assembly 40, and the protection mechanism 50 includes a base 51, a connecting rod 52 and an elastic member 53 , the base 51 has a perforation 510 through the front and rear sides, the base 51 is arranged at the rear end of the frame body 10 and is located below the fixing seat 12 of the adjustment mechanism, and one end of the connecting rod 52 The other end of the connecting rod 52 can slide through the perforation 510 of the base 51 and protrude outside the frame body 10. The elastic member 53 That is to say, it is sleeved on the other end of the connecting rod 52 protruding from the outside, and the elastic member 53 is opposed to the end of the base 51 and the other end of the connecting rod 52 with its two ends, so as to keep the movable jaw body 31 Bottom stability.

When the present invention is in use, the gap adjustment mechanism 40 drives the pusher 43 to move towards the front end of the frame body 10, and the distance between the fixed jaw plate 14 and the bottom end of the movable jaw plate 33 is reduced, so that the crushing chamber 35 The bottom end is formed into a closed shape, and the mined stones are moved from the upper part of the crushing chamber 35 to be located in the crushing chamber 35. After the eccentric shaft 22 is driven by the power source to rotate, the movable jaw plate 33 is cycled relative to the fixed jaw plate 14. The reciprocating motion makes the stone between the movable jaw plate 33 and the fixed jaw plate 14 crushed by extrusion, splitting and bending, please refer to the solid line track 36 shown in Figure 4 Be the trajectory of motion at the top of the movable jaw 33, the dotted line trajectory 86 is the trajectory of motion at the top of the movable jaw of the prior art, the solid line trajectory 37 is the trajectory of motion at the middle section of the movable jaw 33, and the dotted line trajectory 87 is The trajectory of motion at the middle section of the movable jaw of the prior art, the solid line trajectory 38 is the trajectory of motion at the bottom of the movable jaw 33, and the dotted line trajectory 88 is the trajectory of motion at the bottom of the movable jaw of the prior art. Compared with the dotted line track 88 in the prior art, the stroke around the track 38 is narrower than that around the track 88, so the bottom of the movable jaw plate 33 moving along the track 38 can reduce the grinding and peeling effect between it and the stone, and cooperate with the gap adjustment mechanism 40. Adjust the distance between the bottom of the fixed jaw 14 and the movable jaw 33 so that the crushed stones can fall from the bottom of the crushing chamber 35. An angle θ is formed between the movable jaw guard 32 and the movable jaw 33. _X , when crushing stones, the movable jaw guard plate 32 is designed to form an angle of less than 180 degrees toward the movable jaw plate 33, so that the materials rebounded from the crushing chamber 35 can be directly dropped by hitting the movable jaw guard plate 32 into the crushing cavity 35 without being ejected from the crushing cavity 35 and affecting the overall operation, and can increase the speed of feeding and crushing.

The following is an explanation of the principle of action of the present invention:

夹角θ₂。Please refer to Figure 5, let OA be the eccentric shaft 22 eccentric distance E, O ₁ B be the length T of the movable jaw plate 33, OO ₁ be the installation height H of the frame body 10, AB be the length P, and AB ₂ be the movable jaw Main body 31 function extension line, movable jaw plate 33B ₁ B ₂ installed in movable jaw body 31 length L ₃ , AB ₁ is length L ₂ , M ₁ B ₁ is length L ₁ , M ₂ B ₂ is length L ₄ , AO ₁ is S, ∠AOO ₁ =θ, ∠OO ₁ A=φ, ∠AO ₁ B=ψ, ∠ABO ₁ =γ, ∠YOY′=θ. , passing through point A to draw OO ₁ parallel line and line segment

Angle θ ₂ .

Taking X'Y' as the coordinate axis, by the law of cosines in the same way $\mathrm{\γ}={\cos }^{-1}=\frac{P^2+T^2-S^2}{2\mathrm{PT}},$ $\mathrm{\φ}={\cos }^{-1}=\frac{h^2+S^2-{\mathrm{E.}}^2}{2\mathrm{HS}},$ $\mathrm{\ψ}={\cos }^{-1}\frac{T^2+S^2-P^2}{2\mathrm{TS}},$ θ ₁ =180°-φ-ψ, θ ₂ =θ ₁ -γ

According to the laws of motion:

X′ _M1 = Ecosθ+L ₁ cosθ ₂ -L ₂ sinθ ₂ at the feed port of movable jaw, Y′ _M1 = Esinθ+L ₁ sinθ ₂ +L ₂ cosθ ₂

X′ _M2 of movable jaw discharge port = Ecosθ+L ₃ cosθ ₂ -L ₄ sinθ ₂ , Y′ _M2 = Esinθ+L ₃ sinθ ₂ +L ₄ cosθ ₂

If θ ₀ =0°, then

The feed port of movable jaw X _M1 ＝Ecosθ+L ₁ cosθ ₂ -L ₂ sinθ ₂ , Y _M1 ＝Esinθ+L ₁ sinθ ₂ +L ₂ cosθ ₂

X _M2 ＝Ecosθ+L ₃ cosθ ₂ -L ₄ sinθ ₂ at the discharge port of movable jaw, Y _M2 ＝Esinθ+L ₃ sinθ ₂ +L ₄ cosθ ₂

Through the design optimization process, as shown in FIG. 4 , the improved trajectory of the movable jaw plate 33 can be obtained.

By virtue of the above technical means, the present invention has the following advantages:

(1) Due to the working principle and structural characteristics, the production capacity of the improved jaw crusher is increased and the fine powder ratio is reduced.

(2) Due to the changes in the assembly and structure of the relevant components of the improved jaw crusher, the advantages in use and manufacture are as follows:

A. Due to the downward movement of the bearing seat 21, the overall height of the frame body 10 can be designed to be lower, reducing the weight of the frame body 10.

B. The weight of the movable jaw assembly 32 is reduced due to the change of the combined position of the movable jaw assembly 30 and the eccentric shaft 22, the angle θ _X between the movable jaw guard plate 32 and the movable jaw plate 33 and the way of fixing the movable jaw guard plate 32.

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this professional technology Personnel, without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or modifications to equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence still belong to the scope of the technical solution of the present invention.

Claims (4)

1. an Improvement type jaw crusher is characterized in that, includes a Rack Body, a fixed jaw, a transmission mechanism, a movable jaw assembly and a gap adjusting mechanism;

The front end of this Rack Body is provided with a fixed jaw panel seat, and this Rack Body rear end is provided with a governor motion holder, is provided with biside plate at interval between the front end of Rack Body and rear end;

This fixed jaw is arranged on the fixed jaw panel seat of Rack Body;

This transmission mechanism includes diaxon bearing and an eccentric shaft, and this diaxon bearing is separately positioned on this biside plate, and what the two ends of this eccentric shaft can be rotated is arranged in the diaxon bearing, and this eccentric shaft links a power source, and this power source is used for driving the eccentric shaft rotation;

This movable jaw assembly includes a movable jaw body, one movable jaw backplate, one sewing jaw, one briquetting, one fastening bolt and a flexible member, the top of this movable jaw body is sheathed to be hubbed on this eccentric shaft, this movable jaw backplate is arranged on the side outside wall surface of movable jaw body top end and towards the direction of fixed jaw, this sewing jaw be fixed on the movable jaw body and toward the direction of fixed jaw and be positioned at this movable jaw backplate the below, this briquetting is arranged on this movable jaw backplate on a side outside wall surface of fixed jaw and is positioned at the top end of this movable jaw backplate, one end of this fastening bolt runs through the movable jaw body and is combined fixing with this briquetting, this fastening bolt is positioned at the top of this eccentric shaft, and this flexible member is set on the fastening bolt and replaces the other end of this fastening bolt and this movable jaw body respectively back to the another side of fixed jaw with its two ends;

This gap adjusting mechanism has a hydraulic cylinder, seat and an ejector are adjusted in a gap, this hydraulic cylinder is arranged on the governor motion holder, it has an expansion link toward movable jaw assembly direction, one end of this gap adjustment seat connects an end of this expansion link, this ejector one end is hubbed on the other end that seat is adjusted in this gap, and this ejector other end is hubbed on the place, bottom of movable jaw body.

2. Improvement type jaw crusher according to claim 1 is characterized in that, forms the angle less than 180 degree between this movable jaw backplate and this sewing jaw.

3. Improvement type jaw crusher according to claim 2 is characterized in that, the axle center of this eccentric shaft and the top end of this sewing jaw are positioned at equal height.

4. according to each described Improvement type jaw crusher in the claim 1 to 3; it is characterized in that; further be provided with a protection mechanism in this movable jaw assembly bottom; this protection mechanism includes a pedestal; one connecting rod and a spring element; this pedestal have one run through before; the perforation of back two sides; this pedestal is arranged on the rear end of this Rack Body and is positioned at the place, below of this governor motion holder; one end of this connecting rod is hubbed on the place, bottom of movable jaw body; the perforation that runs through this pedestal that the other end of this connecting rod can slide also is stretched on outside this Rack Body; this spring element namely is sheathed on this connecting rod and is stretched on the outer other end, and this spring element is replaced the end of the other end of this pedestal and connecting rod respectively relatively with its two ends.

Images